truncate "received header"

dear all,
is there a way in postfix to truncate "received header".

for example .....i wanna truncating the "recieved header" with sign ">"

Received: from mx1.mydomain.com ([192.168.0.1] helo=mx1.mydomain.com)
by mx2.mydomain.com with esmtp
id 1CRibw-000CVm-Si
for me@mydomain.com; Wed, 10 Nov 2004 09:53:28 +0700
>Received: from localhost (localhost.localdomain [127.0.0.1])
> by mx1.mydomain.com (Postfix) with ESMTP id CA41E67CCB
> for <me@mydomain.com>; Wed, 10 Nov 2004 09:53:28 +0700 (WIT)
>Received: from mx1.mydomain.com ([127.0.0.1])
>by localhost ([127.0.0.1]) (amavisd-new, port 10024)
>with LMTP id 25178-01 for <me@mydomain.com>;
>Wed, 10 Nov 2004 09:53:28 +0700 (WIT)
Received: from n3a.bulk.scd.yahoo.com (n3a.bulk.scd.yahoo.com [66.94.237.37])
by mx1.mydomain.com (Postfix) with SMTP id 71C4B67CC6
for <me@mydomain.com>; Wed, 10 Nov 2004 09:53:27 +0700 (WIT)

thx...
-gian-